CN108511451A - Mixed type three-dimensional storage - Google Patents

Abstract

The present invention proposes a kind of mixed type three-dimensional storage（3D‑M_x）, data and code are stored in same 3D M_xIn chip.It need not read at a high speed but the data of low cost is required to be stored in big storage array, need to read at a high speed and the code insensitive to cost is stored in small storage array.

Description

Mixed type three-dimensional storage

Technical field

The present invention relates to integrated circuit memory fields, more precisely, being related to three-dimensional storage（3D-M）.

Background technology

Three-dimensional storage（3D-M）It is a kind of monomer（monolithic）Semiconductor memory, it contains multiple be stacked with Storage member（Also referred to as memory device）.3D-M includes 3 D ROM（3D-ROM）Memory is read with three-dimensional random （3D-RAM）.3D-ROM can be further divided into three-dimensional masking film program read-only memory（3D-MPROM）Only with three-dimensional electric programming Read memory（3D-EPROM）.Based on its programming mechanism, 3D-M can contain memristor, resistive random- access memory（RRAM or ReRAM）、phase-change memory（PCM）、programmable metallization memory（PMM）Or conductive-bridging random-access memory（CBRAM） Deng.

United States Patent (USP) 5,835,396 discloses a kind of 3D-M（3D-ROM）（Figure 1A）.It contain semi-conductive substrate 0 and Substrate circuitry 0K disposed thereon.The dielectric 0d covering substrate circuitries 0K of one planarizing layers.On insulating medium layer 0d The first accumulation layer 10 is formed, then forms the second accumulation layer 20 on the first accumulation layer 10.First and second accumulation layers 10, 20 are coupled by contacting access opening 13a, 23a with substrate circuitry 0K.

Each accumulation layer（Such as 10,20）Contain a plurality of top address line（That is y address wires, such as 12a-12d, 22a-22d）, it is a plurality of Bottom address wire（That is x address wires, such as 11a, 21a）With multiple memory devices positioned at top address line and bottom address wire infall（Such as 1aa-1ad、2aa-2ad）.Each accumulation layer（Such as 20）Contain an at least storage array（Such as 200A）.Storage array 200A be The set of all memory device 2aa-2ad of an address wire is at least shared in accumulation layer 20.In a storage array 200A, All address wires 21a, 22a-22d are continuous；In adjacent storage array, address wire is discontinuous.

One 3D-M chip contains multiple memory blocks 100.Structure in Figure 1A is exactly a part for memory block 100.Storage 100 uppermost accumulation layer of block is contained only there are one storage array 200A.In other words, in the most top accumulation layer 20 of memory block 100 In, all address wires 21a, 22a-22d are continuous, and edge is in the adjacent edges of memory block 100.Past, same In 3D-M chips 1000, all memory block 1aa-1dd have same size；In each memory block 100, different accumulation layers 10, All storage array 100A, 200A on 20 have same size.

Each memory device is a kind of Two-port netwerk device containing at least two states.Common memory device includes two poles Pipe or class diode component.Particularly, memory device 1aa contains a diode film and a programmable film（Figure 1A）.Diode Seemingly with diode-like, diode refers to any Two-port netwerk device with the following characteristics to the electric characteristic of film：When its applied voltage Numerical value be less than read voltage or applied voltage direction it is opposite with read voltage when, resistance is much larger than its electricity under read voltage Resistance.The state of programmable film can be in the fabrication process（That is masking film program, such as Figure 1A）Or change after the completion of manufacture（I.e. electricity is compiled Journey）.

When the capacity of storage chip is still small, single storage chip is general only to store the other information of unitary class.But with The increase of 3D-M memory capacity（The single memory capacity of 3D-M can reach 1Tb）, a single 3D-M chip will store various Information.For example, data can be stored simultaneously on a single 3D-M chip（In full code book nationality, digital map, music, film, And/or video etc.）And code（Such as operating system, software, and/or game）.Although data reading speed is of less demanding, code Reading speed is required very high.In addition, data have higher requirements to carrying cost.In the prior art, all storage arrays（Or, All memory blocks）There is same size.This can lead to problems：If storage array is too small, higher chip cost will be difficult to Meet requirement of the data to cost；If storage array is too big, slower reading speed if, cannot meet code and be wanted to speed It asks.

Invention content

The main object of the present invention is that data and code are stored in same 3D-M chips.

It is another object of the present invention to optimize the carrying cost of 3D-M and reading speed.

In order to realize that these and other purpose, the present invention propose a kind of mixed type three-dimensional storage（3D-M_x）, storage Array（Or, memory block）There is different size.The data of low cost need not be read but required at a high speed（Code book nationality, digital ground in full Figure, music, film, and/or video etc.）It is stored in big storage array（Or, memory block）In, need high speed read and not to cost Sensitive code（Such as operating system, software, and/or game）It is stored in small storage array（Or, memory block）In.3D-M_xIt can To contain mixing memory block, mixing storage array or combination thereof.In the 3D-M containing mixing memory block_xIn, there is difference The memory block of size can be arranged together shoulder to shoulder.In the 3D-M containing mixing storage array_xIn, a big storage array Multiple small storage arrays arranged shoulder to shoulder can be contained below.

Correspondingly, the present invention proposes a kind of 3D-M containing mixing memory block_x, it is characterised in that including：.

The present invention also proposes a kind of 3D-M containing mixing storage array_x, it is characterised in that including：.

Description of the drawings

Figure 1A is a kind of sectional view of 3D-M in the prior art；Figure 1B is the chip schematic diagram of a 3D-M in the prior art.

Relationship between Fig. 2 array of display efficiency, reading speed and array size.

Fig. 3 is a kind of containing mixing memory block 3D-M_xChip schematic diagram.

Fig. 4 is a kind of containing mixing storage array 3D-M_xChip cross-section figure.

It is noted that these attached drawings are only synoptic diagrams, their nots to scale (NTS) are drawn.For the sake of obvious and is convenient, in figure Portion size and structure may zoom in or out.In different embodiments, identical symbol typicallys represent corresponding or similar Structure.Although the example that this specification is shown is 3D-MPROM, idea of the invention can easily be generalized to other In 3D-M.

Specific implementation mode

Relationship between Fig. 2 array of display efficiency, reading speed and array size.For small storage array, due to each The peripheral circuit size of storage array is substantially stationary, therefore array efficiency is relatively low.With becoming larger for storage array, although array efficiency It increases, but since dead resistance and capacitance increase, reading speed reduces.

In order to which data and code are stored in same 3D-M chips, and them can be met and different with speed to cost wanted It asks, the present invention proposes a kind of mixed type three-dimensional storage（3D-M_x）, storage array（Or, memory block）There is different size.It is not required to The data of low cost are read but required at a high speed（Code book nationality, digital map, music, film, and/or video in full etc.）It is stored in Big storage array（Or, memory block）In, need high speed to read and the code insensitive to cost（As operating system, software and/ Or game etc.）It is stored in small storage array（Or, memory block）In.3D-M_xCan contain mixing memory block, mixing storage array, Or combination thereof.In the 3D-M containing mixing memory block_xIn, there is different size of memory block can be arranged in shoulder to shoulder Together.In the 3D-M containing mixing storage array_xIn, below one big storage array can contain it is multiple arrange shoulder to shoulder it is small Storage array.

Fig. 3 displays are a kind of to contain mixing memory block 3D-M_xChip 2000.It contains multiple memory block 1a, 1b, 1ac-1dd. Wherein, memory block 1a, 1b is bigger than memory block 1ac-1dd.Therefore, memory block 1a, 1b can be used for storing and need not reading at a high speed Data（Code book nationality, digital map, music, film, and/or video in full etc.）, and memory block 1ac-1dd can be used for storing The code for needing high speed to read（Such as operating system, software, and/or game）.

Fig. 4 displays are a kind of to contain mixing storage array 3D-M_xChip.The embodiment contains 2 accumulation layers 10,20, storage Layer 20 is stacked on accumulation layer 10.Accumulation layer 20 is highest accumulation layer, it contains storage array 200A, and accumulation layer 10 is one Intermediate storage layer, it contains 2 storage array 100A, 100A arranged shoulder to shoulder '.It is obvious that the storage battle array in accumulation layer 20 It is bigger than storage array 100A, 100A in accumulation layer 10 ' to arrange 200A.Therefore, the storage array 200A in accumulation layer 20 can be used To store the data that need not be read at a high speed（Code book nationality, digital map, music, film, and/or video in full etc.）, and store Storage array 100A, 100A in layer 10 ' it can be used for storing the code for needing high speed to read（As operating system, software and/ Or game etc.）.

It should be appreciated that under the premise of not far from the spirit and scope of the present invention, it can be to the form and details of the present invention It is modified, this does not interfere the spirit of their application present invention.Therefore, in addition to the spirit according to appended claims, The present invention does not answer any way limited.

Claims (10)

1. a kind of mixed type three-dimensional storage（3D-M_x）, it is characterised in that including：

One storage data first memory block (1a), the first memory block (1a) containing be stacked with including the first highest store Multiple accumulation layers of layer, the first highest accumulation layer contain only one first storage array；

The second memory block (1ac) of one store code, second memory block (1ac) is containing being stacked with including the second highest is deposited Multiple accumulation layers of reservoir, the second highest accumulation layer contain only one second storage array；

The first memory block (1a) arranges shoulder to shoulder with second memory block (1ac), and first storage array is than second storage Array is big.

2. a kind of mixed type three-dimensional storage（3D-M_x）, it is characterised in that contain a memory block, which includes：

It is stacked with the multiple accumulation layers (10,20) for including a highest accumulation layer (20) and an at least intermediate storage layer (10)；

The highest accumulation layer (20) contains only one first storage array (200A)；

The intermediate storage layer contains second and third storage array (100A, 100A '), this second and third storage array not altogether Enjoy address wire；

First storage array (200A) be completely covered this second and third storage array (100A, 100A ').

3. memory according to claim 2, it is further characterized in that：First storage array (200A) stores data.

4. memory according to claim 1 or 3, it is further characterized in that：The data include digital books.

5. memory according to claim 1 or 3, it is further characterized in that：The data include digital map.

6. memory according to claim 1 or 3, it is further characterized in that：The data include music.

7. memory according to claim 1 or 3, it is further characterized in that：The data include film and/or video.

8. memory according to claim 2, it is further characterized in that：This second and third storage array (100A, 100A ') store code.

9. the memory according to claim 1 or 8, it is further characterized in that：The code includes operating system and/or software.

10. the memory according to claim 1 or 8, it is further characterized in that：The code includes game.